Detailed Weather Data for Project: COUN

Date Time TAIR WSPD RELH SRAD 03Dec2017 8 a.m. 39.81 2.10 95.60 2.40 03Dec2017 9 a.m. 39.99 3.60 95.21 79.20 03Dec2017 10 a.m. 44.29 4.90 86.96 242.80 03Dec2017 11 a.m. 51.71 6.10 74.64 325.80 03Dec2017 12 p.m. 58.84 7.40 68.72 430.50 03Dec2017 1 p.m. 63.36 8.80 64.29 459.20 03Dec2017 2 p.m. 66.16 10.40 58.71 415.60 03Dec2017 3 p.m. 67.35 12.70 51.58 243.40 03Dec2017 4 p.m. 66.99 12.50 50.91 144.20 03Dec2017 5 p.m. 64.74 11.10 59.19 22.70 03Dec2017 6 p.m. 62.73 10.80 61.57 0.00 03Dec2017 7 p.m. 45.25 15.60 49.74 0.00 03Dec2017 8 p.m. 61.05 13.00 72.76 0.00 03Dec2017 9 p.m. 61.59 13.20 77.34 0.00 03Dec2017 10 p.m. 61.90 13.00 78.39 0.00 03Dec2017 11 p.m. 61.66 12.90 79.51 0.00 04Dec2017 12 a.m. 62.60 13.90 78.78 0.00 04Dec2017 1 a.m. 63.46 14.80 79.40 0.00 04Dec2017 2 a.m. 64.22 15.40 80.65 0.00 04Dec2017 3 a.m. 66.16 17.00 77.94 0.00 04Dec2017 4 a.m. 66.45 17.70 76.64 0.00 04Dec2017 5 a.m. 66.18 19.50 76.69 0.00 04Dec2017 6 a.m. 66.09 18.30 77.12 0.00 04Dec2017 7 a.m. 65.77 16.70 78.00 0.00 Accuml. Values 1438.37 291.40 1750.34 2365.80 Num. Valid Values 24 24 24 24 Avg. Values 59.93 12.14 72.93 98.57 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 15.52 468.86 72.93 203.41 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.2707 definition: xcompl = 1 - (RELH_avg/100) TdC = 10.7484 definition: TdC = TAIR_avg - ((14.55 + (0.114*TAIR_avg))*xcompl +pow((2.5 + 0.007*TAIR_avg)*xcompl, 3) + (15.9 +0.117*TAIR_avg)*pow(xcompl, 14)) del_lambda1 = 0.6314 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.3686 definition: del_lambda2 = 1 - del_lambda1 Qn = 1.3415 definition: Qn = 0.00714*SRAD_avg + 0.00000526*SRAD_avg*pow(TAIR_avg+17.8, 1.87) +0.00000394*pow(SRAD_avg, 2) - 0.00000000239*pow(SRAD_avg, 2)*pow(TAIR_avg-7.2, 2) - 1.02 es_ea = 4.7212 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 6.9745 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.135 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

Go to Tulsa District Water Control Home Page.